S12 are also really good, I own a pair as well and they are amazing but the hexa are more comfortable to me, the S12 in my left ear always starts to slip of no matter what eartips I choose. Also I find the S12 a little fatiguing because of the treble.

I think I'm still a little in the honeymoon period but is also because I really like them, the things I like about is the clarity of the sound, you can hear everything in songs and the imaging for games like halo is really good, also they are the most comfortable iems I own and I own Aria, S12, zs10 pro x, blon 01, and the Chus. What I don't like is that the cable feels frail, they get a little quiet I think they would benefit from an amp but I don't own any, and I think that's it and I'm nit picking

I haven't have the fortune to try the B2 and the dusk but I also imagine it having more bass also comes from the better technicalities and such? But that's very good to know, one more reason to buy the hexa. Thanks for your comment